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rtc: s35390a: convert to devm_i2c_new_dummy_device() 

I was about to simplify the call to i2c_unregister_device() when I
realized that converting to devm_i2c_new_dummy_device() will simplify
the driver a lot. So I took this approach.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20190830133124.21633-3-wsa+renesas@sang-engineering.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Wolfram Sang 2019-08-30 15:31:24 +02:00 committed by Alexandre Belloni
parent 59a7f24fce
commit 4053e74996
1 changed files with 13 additions and 41 deletions
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54
drivers/rtc/rtc-s35390a.c
View File

@ -434,37 +434,32 @@ static int s35390a_probe(struct i2c_client *client,
char buf, status1; char buf, status1;
struct device *dev = &client->dev; struct device *dev = &client->dev;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
err = -ENODEV; return -ENODEV;
goto exit;
}
s35390a = devm_kzalloc(dev, sizeof(struct s35390a), GFP_KERNEL); s35390a = devm_kzalloc(dev, sizeof(struct s35390a), GFP_KERNEL);
if (!s35390a) { if (!s35390a)
err = -ENOMEM; return -ENOMEM;
goto exit;
}
s35390a->client[0] = client; s35390a->client[0] = client;
i2c_set_clientdata(client, s35390a); i2c_set_clientdata(client, s35390a);
/* This chip uses multiple addresses, use dummy devices for them */ /* This chip uses multiple addresses, use dummy devices for them */
for (i = 1; i < 8; ++i) { for (i = 1; i < 8; ++i) {
s35390a->client[i] = i2c_new_dummy_device(client->adapter, s35390a->client[i] = devm_i2c_new_dummy_device(dev,
client->addr + i); client->adapter,
client->addr + i);
if (IS_ERR(s35390a->client[i])) { if (IS_ERR(s35390a->client[i])) {
dev_err(dev, "Address %02x unavailable\n", dev_err(dev, "Address %02x unavailable\n",
client->addr + i); client->addr + i);
err = PTR_ERR(s35390a->client[i]); return PTR_ERR(s35390a->client[i]);
goto exit_dummy;
} }
} }
err_read = s35390a_read_status(s35390a, &status1); err_read = s35390a_read_status(s35390a, &status1);
if (err_read < 0) { if (err_read < 0) {
err = err_read;
dev_err(dev, "error resetting chip\n"); dev_err(dev, "error resetting chip\n");
goto exit_dummy; return err_read;
} }
if (status1 & S35390A_FLAG_24H) if (status1 & S35390A_FLAG_24H)
@ -478,13 +473,13 @@ static int s35390a_probe(struct i2c_client *client,
err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &buf, 1); err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &buf, 1);
if (err < 0) { if (err < 0) {
dev_err(dev, "error disabling alarm"); dev_err(dev, "error disabling alarm");
goto exit_dummy; return err;
} }
} else { } else {
err = s35390a_disable_test_mode(s35390a); err = s35390a_disable_test_mode(s35390a);
if (err < 0) { if (err < 0) {
dev_err(dev, "error disabling test mode\n"); dev_err(dev, "error disabling test mode\n");
goto exit_dummy; return err;
} }
} }
@ -493,10 +488,8 @@ static int s35390a_probe(struct i2c_client *client,
s35390a->rtc = devm_rtc_device_register(dev, s35390a_driver.driver.name, s35390a->rtc = devm_rtc_device_register(dev, s35390a_driver.driver.name,
&s35390a_rtc_ops, THIS_MODULE); &s35390a_rtc_ops, THIS_MODULE);
if (IS_ERR(s35390a->rtc)) { if (IS_ERR(s35390a->rtc))
err = PTR_ERR(s35390a->rtc); return PTR_ERR(s35390a->rtc);
goto exit_dummy;
}
/* supports per-minute alarms only, therefore set uie_unsupported */ /* supports per-minute alarms only, therefore set uie_unsupported */
s35390a->rtc->uie_unsupported = 1; s35390a->rtc->uie_unsupported = 1;
@ -505,26 +498,6 @@ static int s35390a_probe(struct i2c_client *client,
rtc_update_irq(s35390a->rtc, 1, RTC_AF); rtc_update_irq(s35390a->rtc, 1, RTC_AF);
return 0; return 0;
exit_dummy:
for (i = 1; i < 8; ++i)
if (s35390a->client[i])
i2c_unregister_device(s35390a->client[i]);
exit:
return err;
}
static int s35390a_remove(struct i2c_client *client)
{
unsigned int i;
struct s35390a *s35390a = i2c_get_clientdata(client);
for (i = 1; i < 8; ++i)
if (s35390a->client[i])
i2c_unregister_device(s35390a->client[i]);
return 0;
} }
static struct i2c_driver s35390a_driver = { static struct i2c_driver s35390a_driver = {
@ -533,7 +506,6 @@ static struct i2c_driver s35390a_driver = {
.of_match_table = of_match_ptr(s35390a_of_match), .of_match_table = of_match_ptr(s35390a_of_match),
}, },
.probe = s35390a_probe, .probe = s35390a_probe,
.remove = s35390a_remove,
.id_table = s35390a_id, .id_table = s35390a_id,
}; };